Metal Slug Zombie Revenge

Everyone was scared when a zombie arise from the dead. Soon the number multiplies as the people that they have eaten turned into a zombie. The government got concerned and they have sent it their best soldier.
This is a non-stop game, wherein you can't take any breaks. You need to survive as long as you can. Don't worry, you can reload non-stop, so your ammo won't run out. Every now and then, a package would drop from the sky, containing a special gun. The game becomes better and challenging as you make some progress.
Think you can last in a zombie apocalypse?